Question 1

What does Langtian make?

Accepted Answer

Langtian makes thermoplastic composite sheets and felts for automotive interiors. The range includes PP glass fiber board, LWRT board, LWRTUD felt or sheet, PET/PP composite sheet, PET non-woven and pile carpet, PHC fiberglass composite panel, PP bamboo or hemp fiberboard and PET foam board.

Question 2

How do I choose between sheet, felt, sandwich and natural-fiber materials?

Accepted Answer

Start from the part: its function, geometry and surface layer. Sheets are flat structural materials, felts and non-wovens are used as surface or lining layers, sandwich panels place face layers around a core, and natural-fiber boards use bamboo or hemp in a PP matrix. Send your drawing or description and we will suggest material families to compare.

Question 3

Can size, thickness, areal weight, color or molded shape be customized?

Accepted Answer

Yes. Langtian can discuss size, thickness, areal weight, color and compression-molded shapes against the part drawing and material requirements. Available options are confirmed for each product and order.

Question 4

Can you provide technical data sheets or test reports?

Accepted Answer

Product technical data sheets can be provided. Tell us which tests or material requirements you need so the relevant reports can be checked for your project.

Question 5

Which applications are these materials used for?

Accepted Answer

The supplied product information lists automotive headliners, sunroof covers, parcel shelves, door panels, luggage compartment liners, spare tire covers, tailgate trim and seat backs. Some PET boards are also described for outdoor structural parts. Suitability depends on the part specification.

Question 6

Which material properties can be discussed for a part?

Accepted Answer

The supplied product descriptions cover lightweight construction, strength, impact resistance, thermal and acoustic performance, low odor and dimensional stability across different materials. Relevant properties depend on the selected product and specification; request its technical data sheet for a project.

Question 7

Do you offer OEM or ODM services?

Accepted Answer

OEM and ODM services are not offered. Send the part requirements to discuss available material and processing options.

Question 8

What should I include in an inquiry?

Accepted Answer

The part and application, the material family you are considering, target thickness, areal weight and sheet or roll size, expected quantity, and any drawings or specification requirements. The inquiry form has a field for each of these.

Question 9

Can I ask about samples?

Accepted Answer

Yes. Choose “Sample request” as the inquiry context and describe the material and size you need. Sample availability and shipping are confirmed for each material and project.

Question 10

Can a custom material be sampled before production?

Accepted Answer

Yes. For custom products, the supplied process recommends reviewing a sample before arranging volume production. Sample timing and charges depend on the material and quantity. Any credit or refund of a sample charge against a later bulk order must be agreed in the quotation.

Question 11

Where are minimum order quantities and prices?

Accepted Answer

Minimum order quantity is recorded per product and confirmed when you inquire. Prices are quoted for each inquiry based on the specification and quantity; no price list is published on this site.

Question 12

Does a quotation include packaging, shipping and taxes?

Accepted Answer

A regular quotation is for the product. Packaging, shipping and taxes are confirmed separately for the order; ask for an itemized quotation if you need one.

Question 13

Can pricing be discussed for different quantities or ongoing orders?

Accepted Answer

Yes. Pricing is discussed against quantity, specification and the order plan. A long-term supply arrangement can also be discussed where applicable.

Question 14

Can a quoted price change with materials or exchange rates?

Accepted Answer

Material prices and exchange rates can affect a quotation. The applicable price is confirmed when the order is discussed.

Question 15

How are production and sample lead times confirmed?

Accepted Answer

Sample timing depends on the product and process. The customer-supplied estimate for a regular production order starts at about 15 days; actual timing depends on quantity and process complexity. The bulk-order schedule is confirmed per order, including any peak-season change. Urgent production can be discussed against current capacity.

Question 16

Can production progress be shared?

Accepted Answer

Progress updates can be arranged, including updates at agreed production milestones. Confirm the reporting points when placing the order.

Question 17

Can an order include inspection or a third-party check?

Accepted Answer

Langtian describes quality checks from raw material through finished product and can discuss third-party inspection. State the inspection scope and report requirements before the order is confirmed.

Question 18

How are quality issues discussed?

Accepted Answer

Contact Langtian with the order reference, affected quantity and inspection details. Any return, replacement or replenishment is discussed under the terms agreed for that order.

Question 19

Which certificate copies are available?

Accepted Answer

Supplied ISO 14001 and IATF 16949 management-system certificate copies are available to review. Each copy states its scope and dates; please confirm current registration status with the issuing body. A management-system certificate does not certify every individual product.

Question 20

Where is the factory?

Accepted Answer

Xinhai Avenue 52-8, Xuyi County Economic Development Zone, Huai’an, Jiangsu, China.

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